<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>登录</title>
  <link rel="shortcut icon" href="../../static/images/icon.icon" type="image/x-icon">
  <link rel="stylesheet" href="../../static/bootstrap-3.3.7-dist/css/bootstrap.min.css">
  <script src="../../static/bootstrap-3.3.7-dist/js/jquery.min3.5.js"></script>
  <script src="../../static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
  <style>
    body{
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .loginCenter{
      background-color: #bababa;
      width: 400px;
      height: 400px;
      border-radius: 4px;
    }
  </style>
</head>
<body>
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-12">

        <div class="center-block text-center loginCenter">
          <div>
            <span>用户名</span>
            <input type="text" placeholder="请输入用户名">
          </div>

          <div>
            <span>密码</span>
            <input type="text" placeholder="请输入密码">
          </div>

          <div>
            <span>QQ登录</span>
          </div>
        </div>

        </div>
      </div>
  </div>
</body>
</html>